Consolidated Balance Sheets - USD ($) $ in Thousands		Jun. 30, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents		$ 213,953	$ 286,656
Accounts receivable, net		554,222	554,263
Other current assets		29,028	59,506
Total current assets		797,203	900,425
Property, plant, and equipment
Cost		13,740,911	13,365,593
Less accumulated depreciation		5,139,941	4,823,993
Net property, plant, and equipment		8,600,970	8,541,600
Goodwill		4,783	4,783
Other intangible assets		697,241	713,075
Equity investments		920,123	944,696
Other assets	[1]	198,630	167,049
Total assets	[2]	11,218,950	11,271,628
Current liabilities
Accounts and imbalance payables		359,298	360,562
Short-term debt		2,532	215,780
Accrued ad valorem taxes		35,827	72,875
Accrued liabilities		223,887	254,640
Total current liabilities		621,544	903,857
Long-term liabilities
Long-term debt		6,824,214	6,569,582
Deferred income taxes		15,279	14,424
Asset retirement obligations		301,975	290,021
Other liabilities		433,775	385,629
Total long-term liabilities		7,575,243	7,259,656
Total liabilities	[3]	8,196,787	8,163,513
Equity and partners' capital
Common units (384,613,934 and 384,070,984 units issued and outstanding at June 30, 2023, and December 31, 2022, respectively)		2,888,745	2,969,604
General partner units (9,060,641 units issued and outstanding at June 30, 2023, and December 31, 2022)		322	2,105
Total partners' capital		2,889,067	2,971,709
Noncontrolling interests		133,096	136,406
Total equity and partners' capital		3,022,163	3,108,115
Total liabilities, equity, and partners' capital		$ 11,218,950	$ 11,271,628
Common units issued		384,613,934	384,070,984
Common units outstanding		384,613,934	384,070,984
General partner units issued		9,060,641	9,060,641
General partner units outstanding		9,060,641	9,060,641

[1] Other assets includes $3.7 million and $6.5 million of NGLs line-fill inventory as of June 30, 2023, and December 31, 2022, respectively. Other assets also includes $78.4 million and $60.4 million of materials and supplies inventory as of June 30, 2023, and December 31, 2022, respectively.

[2] Total assets includes related-party amounts of $1.3 billion as of June 30, 2023, and December 31, 2022, which includes related-party Accounts receivable, net of $346.7 million and $313.9 million as of June 30, 2023, and December 31, 2022, respectively. See Note 5.

[3] Total liabilities includes related-party amounts of $346.1 million and $312.3 million as of June 30, 2023, and December 31, 2022, respectively. See Note 5.